diff --git a/h5p-default-storage.class.php b/h5p-default-storage.class.php
index 1c564ad..f78b829 100644
--- a/h5p-default-storage.class.php
+++ b/h5p-default-storage.class.php
@@ -257,6 +257,26 @@ class H5PDefaultStorage implements \H5PFileStorage {
     return file_get_contents($this->path . $file_path);
   }
 
+  /**
+  * Save files uploaded through the editor.
+  * The files must be marked as temporary until the content form is saved.
+  *
+  * @param \H5peditorFile $file
+  * @param int $contentid
+   */
+  public function saveFile($file, $contentId) {
+    $path = $this->path . '/' . ($contentId === 0 ? 'editor' : 'content') . '/' . $file->getType() . 's/' . $file->getName();
+    self::dirReady($path);
+
+    $fileData = $file->getData();
+    if ($fileData) {
+      file_put_contents($path, $fileData);
+    }
+    else {
+      copy($_FILES['file']['tmp_name'], $path);
+    }
+  }
+
   /**
    * Recursive function for copying directories.
    *
diff --git a/h5p-file-storage.interface.php b/h5p-file-storage.interface.php
index b75625e..9f44f94 100644
--- a/h5p-file-storage.interface.php
+++ b/h5p-file-storage.interface.php
@@ -125,4 +125,13 @@ interface H5PFileStorage {
    * @return string contents
    */
   public function getContent($file_path);
+
+  /**
+   * Save files uploaded through the editor.
+   * The files must be marked as temporary until the content form is saved.
+   *
+   * @param \H5peditorFile $file
+   * @param int $contentid
+   */
+  public function saveFile($file, $contentId);
 }